Hi folks,
This is a very important hotfix which basically fixes an exception error that could be caused by getting any perk that adjusts enemy resistance % chance. Like Khamuel's Strength I.
This will appear as an innocent glitch of the perk not get removed once you click it, but underlying, it can cause unexpected issues in many game systems during the character's session, ie. not receiving other perk benefits, not gaining mastery, save with these perk taking too long to load / not loading etc.
The things such a small thing can fork are truly endless...
It's highly recommended to upgrade to this patch as soon as possible, even if you aren't using any perks of that type.